Display substrate, display device and driving method thereof

Abstract

A display substrate, a display device and a driving method thereof are provided. The display substrate includes a plurality of pixel regions, a plurality of non-pixel regions, and a plurality of optical sensing units located in the plurality of non-pixel regions, each of the plurality of non-pixel regions being located between adjacent pixel regions, each of the plurality of optical sensing units being configured to receive light and output a sensing signal.

What is claimed is: 
     
         1 . A display substrate, comprising:
 a plurality of pixel regions;   a plurality of non-pixel regions, each of the plurality of non-pixel regions being located between adjacent pixel regions; and   a plurality of optical sensing units located in the plurality of non-pixel regions, each of the plurality of optical sensing units being configured to receive light and output a sensing signal.   
     
     
         2 . The display substrate according to  claim 1 , wherein the optical sensing unit comprises a photosensitive layer configured to absorb the light. 
     
     
         3 . The display substrate according to  claim 1 , further comprising a first base substrate and a reflection layer, wherein the reflection layer and the plurality of optical sensing units are disposed on the first base substrate; the reflection layer is configured to reflect light irradiated thereon and located in the plurality of non-pixel regions; and the plurality of optical sensing units are closer to the first base substrate than the reflection layer. 
     
     
         4 . The display substrate according to  claim 3 , wherein the reflection layer comprises a plurality of reflection elements; and an area of a cross-section of each of the reflection elements in a direction parallel with the first base substrate is gradually decreased in a direction from a position close to the first base substrate to a position away from the first base substrate. 
     
     
         5 . The display substrate according to  claim 4 , wherein a cross-section of each of the reflection elements in a direction perpendicular to the first base substrate comprises a curved or parabolic part. 
     
     
         6 . The display substrate according to  claim 3 , wherein the reflection layer comprises a plurality of reflection elements; and in a direction perpendicular to the first base substrate, an area of a cross-section parallel with the first base substrate of each of the reflection elements close to the first base substrate is greater than an area of a cross-section parallel with the first base substrate of the reflection element away from the first base substrate. 
     
     
         7 . The display substrate according to  claim 3 , wherein the reflection layer comprises a plurality of reflection elements; and a distance between adjacent reflection elements is gradually increased in a direction from a position close to the first base substrate to a position away from the first base substrate. 
     
     
         8 . The display substrate according to  claim 3 , wherein the reflection layer and the plurality of optical sensing units are at least partially overlapped with each other in a direction perpendicular to the first base substrate. 
     
     
         9 . The display substrate according to  claim 3 , wherein the plurality of optical sensing units are in a one-to-one correspondence with the plurality of pixel regions. 
     
     
         10 . The display substrate according to  claim 1 , further comprising a first base substrate and a color filter (CF) layer, wherein the plurality of optical sensing units and the CF layer are disposed on the first base substrate, and the CF layer is located on a side of the plurality of optical sensing units close to the first base substrate. 
     
     
         11 . A display device, comprising a second base substrate and the display substrate according to  claim 1 , wherein the second base substrate is disposed opposite to the display substrate; and a plurality of mutually insulated display electrodes are further provided on a side of the second base substrate close to the display substrate. 
     
     
         12 . The display device according to  claim 11 , wherein each of the optical sensing units corresponds to at least one display electrode. 
     
     
         13 . The display device according to  claim 11 , further comprising a signal receiving unit, a signal adjusting unit and a signal outputting unit, wherein the signal receiving unit is configured to receive the sensing signal; the signal adjusting unit is configured to adjust a first driving signal, to be inputted into the display electrode of the pixel region to which the optical sensing unit outputting the sensing signal belongs, into a second driving signal according to the sensing signal; and the signal outputting unit is configured to input the second driving signal to the display electrode. 
     
     
         14 . A method for driving a display device, the display device comprising a second base substrate and a display substrate; the display substrate comprising: a plurality of pixel regions, a plurality of non-pixel regions and a plurality of optical sensing units; each of the plurality of non-pixel regions being located between adjacent pixel regions; the plurality of optical sensing units being located in the plurality of non-pixel regions; each of the plurality of optical sensing units being configured to receive light and output a sensing signal;
 the second base substrate being disposed opposite to the display substrate; a plurality of mutually insulated display electrodes being further provided on a side of the second base substrate close to the display substrate;   the method comprising:   receiving the sensing signal outputted by the optical sensing unit;   adjusting a first driving signal, to be inputted into the display electrode of the pixel region to which the optical sensing unit outputting the sensing signal belongs, into a second driving signal according to the sensing signal; and   inputting the second driving signal to the display electrode.